rte_state_transfer.h

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#ifndef RTE_STATE_TRANSFER_H
#define RTE_STATE_TRANSFER_H
 
#include <stdint.h>
#include <stddef.h>
#include "rte/utils/status/rte_status.h"
 
#ifdef __cplusplus
extern "C" {
#endif

#define RTE_STATE_TRANSFER_MAX_FIELDS 8U

typedef rte_status_t (*rte_state_field_encode_fn)(const void *data, uint8_t *out, size_t size);

typedef rte_status_t (*rte_state_field_decode_fn)(void *data, const uint8_t *in, size_t size);

typedef struct {
    const char *name;
    void       *data;
    size_t      size;
    rte_state_field_encode_fn encode_fn;
    rte_state_field_decode_fn decode_fn;
} rte_state_field_t;

typedef struct {
    rte_state_field_t fields[RTE_STATE_TRANSFER_MAX_FIELDS];
    uint32_t            field_count;
} rte_state_transfer_registry_t;

rte_status_t rte_state_transfer_registry_init(rte_state_transfer_registry_t *registry);

rte_status_t rte_state_transfer_register_field(rte_state_transfer_registry_t *registry,
                                                  const char *name, void *data, size_t size);

rte_status_t rte_state_transfer_register_field_ex(rte_state_transfer_registry_t *registry,
                                                     const char *name, void *data, size_t size,
                                                     rte_state_field_encode_fn encode_fn,
                                                     rte_state_field_decode_fn decode_fn);

size_t rte_state_transfer_encoded_size(const rte_state_transfer_registry_t *registry);

rte_status_t rte_state_transfer_encode(const rte_state_transfer_registry_t *registry,
                                          uint8_t *out, size_t out_size, size_t *out_len);

rte_status_t rte_state_transfer_decode(const rte_state_transfer_registry_t *registry,
                                          const uint8_t *in, size_t in_len);
 
#ifdef __cplusplus
}
#endif
 
#endif /* RTE_STATE_TRANSFER_H */